$B_{(s)}\to D_{(s)}h(h)(h)$ Decays in LHCb

We report recent measurements from LHCb on $B_{(s)}\to D_{(s)}h(h)(h)$ decays using $\sim$35~pb$^{-1}$ of data collected in 2010. In brief, we measure the following ratios of branching fractions: \begin{eqnarray*} {{\bf{B}}(\overline{B^0}\to D^+K^-)\over{\bf{B}}(\overline{B}^0\to D^+\pi^-)} &= 0.0752\pm0.0064\pm0.0026 \\ {{\bf{B}}({\overline{B^0_s}}\to D^0 K^{*0})\over{\bf{B}}({\overline{B^{0}}}\to D^0\rho^{0})} &= 1.39\pm0.31\pm0.17\pm0.18 \\ {{\bf{B}}(\overline{B^0}\to D^+K^-\pi^+\pi^-)\over{\bf{B}}(\overline{B^0}\to D^+\pi^-\pi^+\pi^-)} &= 0.052\pm0.009\pm0.005 \\ {{\bf{B}}(B^-\to D^0 K^-\pi^+\pi^-)\over{\bf{B}}(B^-\to D^0\pi^-\pi^+\pi^-)} &= 0.096\pm0.015\pm0.008 \end{eqnarray*} \noindent where the uncertainties are statistical and systematic, respectively. The first of these measurements is the most precise to date, and the others are first observations.